LTC1401
TYPICAL APPLICATIONS
Interface to the TMS320C50’s TDM Serial Port (Frame Sync is Generated from TFSX)
5V
3V
+
10µF
0.1µF
+
8
1 VCC SHDN CLK 6
UNIPOLAR
INPUT
2 AIN
LTC1401
CONV
7
3 VREF
5
DOUT
GND
10µF
0.1µF
4
2.5MHz EXTERNAL CLOCK CLR LD P T
TMS320C50
QC 74HC161
TCLKX
CLK A B C D
TCLKR
TFSX
TFSR
CLKOUT
20MHz
TDR
LTC1401 • TA04a
Logic Analyzer Waveforms Show 6.4µs Throughput Rate (Input Voltage = 0.765V, Output Code = 0101 1111 1010 = 153010)
14
1401 TA5b
Data from the LTC1401 Loaded into the TMS320C50’s TRCV Register
X RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X
1401 TA4c
Data Stored in the TMS320C50’s Memory (in Right Justified Format)
0 0 0 RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1401 TA4d